vsprintf.c revision 1.19 
1/*	$NetBSD: vsprintf.c,v 1.19 2013/05/17 12:55:57 joerg Exp $	*/
2
3/*-
4 * Copyright (c) 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#if defined(LIBC_SCCS) && !defined(lint)
37#if 0
38static char sccsid[] = "@(#)vsprintf.c	8.1 (Berkeley) 6/4/93";
39#else
40__RCSID("$NetBSD: vsprintf.c,v 1.19 2013/05/17 12:55:57 joerg Exp $");
41#endif
42#endif /* LIBC_SCCS and not lint */
43
44#include "namespace.h"
45#include <assert.h>
46#include <errno.h>
47#include <limits.h>
48#include <locale.h>
49#include <stdio.h>
50
51#include "reentrant.h"
52#include "setlocale_local.h"
53#include "local.h"
54
55#ifdef _FORTIFY_SOURCE
56#undef vsprintf
57#undef sprintf
58#endif
59
60__weak_alias(sprintf_l, _sprintf_l)
61__weak_alias(vsprintf_l, _vsprintf_l)
62
63int
64vsprintf_l(char *str, locale_t loc, const char *fmt, va_list ap)
65{
66	int ret;
67	FILE f;
68	struct __sfileext fext;
69
70	_DIAGASSERT(str != NULL);
71	_DIAGASSERT(fmt != NULL);
72
73	_FILEEXT_SETUP(&f, &fext);
74	f._file = -1;
75	f._flags = __SWR | __SSTR;
76	f._bf._base = f._p = (unsigned char *)str;
77	f._bf._size = f._w = INT_MAX;
78	ret = __vfprintf_unlocked_l(&f, loc, fmt, ap);
79	*f._p = 0;
80	return ret;
81}
82
83int
84vsprintf(char *str, const char *fmt, va_list ap)
85{
86	return vsprintf_l(str, _current_locale(), fmt, ap);
87}
88
89int
90sprintf_l(char *str, locale_t loc, char const *fmt, ...)
91{
92	int ret;
93	va_list ap;
94
95	va_start(ap, fmt);
96	ret = vsprintf_l(str, loc, fmt, ap);
97	va_end(ap);
98
99	return ret;
100}
101
102int
103sprintf(char *str, char const *fmt, ...)
104{
105	int ret;
106	va_list ap;
107
108	va_start(ap, fmt);
109	ret = vsprintf(str, fmt, ap);
110	va_end(ap);
111
112	return ret;
113}
114